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    • 9. 发明授权
    • Mixer circuit and radio communication device using the same
    • 混频器电路和无线通信设备使用相同
    • US08190117B2
    • 2012-05-29
    • US12207785
    • 2008-09-10
    • Toshiya MitomoOsamu Watanabe
    • Toshiya MitomoOsamu Watanabe
    • H04B1/26H04B1/28H01Q11/12
    • H03D7/1441H03D7/1458H03D7/165H03D2200/0047H03D2200/0084
    • A mixer circuit includes a voltage-to-current converter which converts a positive phase input voltage signal and a reversed phase input voltage signal input to a first input terminal and a second input terminal into a positive phase current signal and a reversed phase current signal, a switching circuit switches over the positive phase current signal and the reversed phase current signal according to a positive phase local signal and a reversed phase local signal, and generates a positive phase output current signal and a reversed phase output current signal, and an impedance element connected between the first common terminal and the second common terminal, having a relatively high impedance to a differential-mode signal between the positive phase current signal and the reversed phase current signal, and having a relatively low impedance to a common-mode signal between the positive phase current signal and the reversed phase current signal.
    • 混频器电路包括电压 - 电流转换器,其将输入到第一输入端子和第二输入端子的正相输入电压信号和反相输入电压信号转换为正相电流信号和反相电流信号, 开关电路根据正相本地信号和反相本地信号切换正相电流信号和反相电流信号,并产生正相输出电流信号和反相输出电流信号,以及阻抗元件 连接在第一公共端子和第二公共端子之间,对正相电流信号和反相电流信号之间的差分模式信号具有相对较高的阻抗,并且具有相对较低的阻抗, 正相电流信号和反相电流信号。